Robust congestion signaling
- 24 August 2005
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- p. 332-341
- https://doi.org/10.1109/icnp.2001.992914
Abstract
We present an improved explicit congestion notification (ECN) mechanism that enables a router to signal congestion to the sender without trusting the receiver or other network devices along the signaling path. Without our mechanism, ECN-based transports can be manipulated to undermine congestion control. Web clients seeking faster downloads, for example, can trivially conceal congestion signals from Web servers. A misbehaving connection would exceed its fair bandwidth share at the expense of competing traffic by as much as an order of magnitude in our simulations. Our improved mechanism is robust because it does not depend on correct implementation at locations other than the sender and marking router, and it is practical because it admits an efficient implementation that is backwards-compatible with prior ECN and TCP/IP mechanisms.Keywords
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